Routing through Fabric Inlay Help

I'm planing on doing a full bottom fabric inlay with a quad set-up of Future Fin boxes.
I'm sitting here thinking of how I'm going to do it.
Do I laminate the fabric and go strait to routing the boxes? Seems like the fabric might still tear or shred with nothing on top, and get covered in foam dust.
Do I laminate the ares of the fin boxes (like a tail patch) and the route through that? Tacky laminating coat will get all covered in foam dust, scratched up by router etc.
Do I route the boxes and glass them in first, and then do the cloth inlay on top of the boxes?
Or lastly do I do fabric, cloth, hot coat and then route the boxes in and glass accordingly? I realize this last one goes against proper Future box installation technique but again I'm simply trying to protect the fabric and have never dealt with this situation before.
Thanks to all for any help or tips you can offer.
Bill